/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpression.h
struct FMaterialExpressionCollection
TArray<TObject...
EditorComments
Array of comments associated with this material; viewed in the material editor.
TObjectPtr<UMa...
ExpressionExecBegin
The execution begin expression, if material is using an exec wire
TObjectPtr<UMa...
ExpressionExecEnd
TArray<TObject...
Expressions
Array of material expressions, excluding Comments. Used by the material editor.